Fix compile warning [-Wtype-limits]

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 7233 matching lines @@
 }
 
 
 size_t Isolate::NumberOfHeapSpaces() {
   return i::LAST_SPACE - i::FIRST_SPACE + 1;
 }
 
 
 bool Isolate::GetHeapSpaceStatistics(HeapSpaceStatistics* space_statistics,
                                      size_t index) {
-  if (!space_statistics)
-    return false;
-  if (index > i::LAST_SPACE || index < i::FIRST_SPACE)
+  if (!space_statistics) return false;
+  if (!i::Heap::IsValidAllocationSpace(static_cast<i::AllocationSpace>(index)))
     return false;
 
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   i::Heap* heap = isolate->heap();
   i::Space* space = heap->space(static_cast<int>(index));
 
   space_statistics->space_name_ = heap->GetSpaceName(static_cast<int>(index));
   space_statistics->space_size_ = space->CommittedMemory();
   space_statistics->space_used_size_ = space->SizeOfObjects();
   space_statistics->space_available_size_ = space->Available();
@@ skipping 1161 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8